Forced-draft water-grate



H. F. MORRIS.

FORCED DRAFT WATER GRATE.

APPLICATION FILED NOV. 3.19l9.

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H. F. MORRIS.

FORCED DRAFT WATER GRATE.

APPLICATION FILED Nov.3.19I9.

1,348,235.- Patented Aug. 3, 1920.

4 SHEETS-SHEET 2.

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H. F. MORRIS.

FORCED DRAFT WATER GRATE.

APPLICATION FILED Nov. a. m9.

1,348,235. Patented Aug. 3,1920.

4 SHEETS-SHEET 4.

Harry Morlw's 597% PATENT oFFicr..

UNITED HARRY F. MORRIS, OF COLLINGSWOOD, NEW JERSEY.

FORCED-DRAFT WATER-GBATE.

new and useful Improvements in Forced- Draft WatersGrrates, of which the following is a specification.

My invention relates to improvements in water grates used in connection'with forced draft and comprises improvements to the device upon which Letters Patent No. 1,261,- 268 under date of April 2nd, 1918, were issued to me and one Bitner Shinn.

An. object of the present invention vis to provide means, in a grateof the class described, to admit the propervolume o f air to said grate to obtain amore perfect combustion of fuel under a given pressure;

VA further object is to provide means in connection with said grate to increase the volume of air to bead'initted to said grate,

Y especially under a low pressure.

I attain these and other objects by means l ofthe mechanism illustrated in the acccompanying drawings, wherein Figure 1 is a plan View of the device; Fig. 2 is a transverse sectional View of the device on line 2 2 of Fig. 1;

Fig. 3 is a vertical sectional view Online 3-'3 of Fig. 1;- I Fig.- 3a is a perspective of an end sectional viewv of the device assembled;

Fig. 4 is a plan view on line 4-'4 of Fig. 2; Fig. 5 is a transverse sectional view on line 5 5 of Fig. 1; y f Y Fig. 6 is a plan view of aroundl conical disk;

Fig.

disk illustrated in Fig. 6; Y.

Fig. 8 is a plan view of the slidable d isk;

. Figs. 9 and 10 are vertical sectional .views of the slidableV disk on, lines 9-9 and 10-1(), respectively, of Fig. 8;'

Fig. 11 is a sectional view of the ball plate showing the opening therein with a ball seated; l l

Fig. 12 is a sectional view illustratinga vtapering disk positioned-in the opening in the grate;

7 is aside elevational view of the Fig. 13 is a planrview of therdisk illus- Atraterd in Fig. 12; n

Fig. 14 is a plan view lof a square disk; showing it positioned in a grate;

Fig. 15 isa planview, Fig. 16 a side elevational view and Fig. 17 a bottom view of Specification of Letters Patent.

Patented Aug. 3, 1920.

Application filed November 3,1919. Serial No. 335,295.

the square disk shown in position in Fig.

14; and Y Fig. 18 illustrates a slidable disk having four integral arms.

Like reference characters, refer to like parts throughout the drawings.

Referring to the drawings the numeral 10 designates a lire grate provided at the front with a water inlet pipe 11 whereby water 12 enters and circulates through said grate 10. A water voutlet pipe 13 is provided at lthe backof said grate 10 whereby the water after circulating through said grate and beng subjected to the heat therein is carried o thus providing for a continuous circulation of the water through said grate preventing the overheating and melting thereof. An air chamber 14 is provided having the door 15 for access thereto and a latch 16 to secure the same in a closed position.v This door 15, however, may be secured by means of a bolt, or other suitable means as will insure as near as possible, an air tight connection. Y f

To obtain forced draft air is forced by a blower, or by any suitable means, through the pipe 17 into and through the air chamber 14 as indicated by the arrows in Fig. 2. Said air chamber 14 has cast integral therewith the lip 18 upon which rests the ball plateY 19. Thispball plate 19 is made of steel, or other suitable lieat resisting material and is provided with the openings 20, the upper portion of said openings 20k being groundk hese balls 21 are likewise constructed of steel or other heat resisting material, and of asize and weightsuitable for the purpose hereinafter` set forth. Y

In lieu of the ball plate 19 the conical disks 23 or 24, having but a central opening therein of the proper diameter forthe purpose, may be inserted in the bottom of the cored openings 22, the said vcentral opening being ground .out to form a socket for the ball 21 to seat.

The said grate 1() is provided with the cored openings or holes 22 which correspond with the openings 2() and permit of communi'cation with the air chamber 14. In these' cored openings 22 Vare positioned the disks 23 or24. I have illustrated two forms of disks, 23 being of the round type and 24 4 of the square type, the particular' form to be used being optional. Said disks V23 and 24 are .conical or tapering in form and are adapted to it securely in the cored openings 22 and may be made'heavier than the air pressure to be exerted against them in order that they may remain in position under such pressure. I find in practice, however, that the preferable method to retain these disks in position is to cement them in the openings 22. Being conical in form they may be readily removed, when so secured, from beneath by a stroke of any suitable tool. Said disks 23 and 24 are provided-with openings of such diameter and of such number as may be found requisite for the purpose hereinafter set forth.

Grooves 27 are provided in the top of said grate 10 and penetrate therein only to a depth suflicient for the insertion and retention of the slidable disks 25, the remaining portion providing a ledge on which the said disks 25 rest. The said disks 25 are made conical or tapering in form and the grooves 27 are likewise tapering to accommodate the said disks, as illustrated in the drawings.

The said grooves 27 are illustrated inthe drawings as extending crosswise in said grate 10 between the cored openings 22, but they may extend lengthwise of the grate or they may extend both crosswise and lengthwise to accommodate the form of slidable disk 29 particularly illustrated in Fig. 18. A fg, or suitable sized, hole may be provided through the disks 25 and 29 and a screw inserted therein to firmly retain them in the grooves 27, if desired.

The disks 25 are constructed in sections as shown in Fig. 1. A section is inserted in a 'groove and then slid along until it contacts against the opposite side of the grate, another section is then inserted and slid along until it contacts against the first section and so until the groove is fully occupied.

Cored or drilled holes 28 are also provided in the grate 10 as illustrated particularly in Fig. 32L whereby air is admitted to the slidable disks 25 which are provided with the openings 2G in the same manner as disks and 24, and such openings may be of such diameter and number as may be found requisite; said holes 28 communicate with the cored openings 22 whereby an additional volume of air may be admitted to the grate 10 and provides a greater area for the circulation ofsuch air. If the form ofV disk illustrated in Fig. 18 is used then the cored openings 28 are provided both crosswise and lengthwise of the grate so that air may be admitted to all portions of the said disk 29.

In operative position the grate rests upon the ball plate 19 which in turn restsupon the lip 18 of the air chamber 14,501'l a disk 23 or 24 may be utilized in lieu of the plate 19l as hereinabove described. The balls 21 rest in the sockets ground in the upper part of the openings 2O of said ballplate 19. The disks 23 or 24 are then placed in position in the cored openings 22 in the grate 10, the conical end of said disks extending down in said openings 22.' Air is then forced into the air chamber 14 in the manner hereinbefore set forth. This will force the balls 21 slightly from their seat in the sockets aforesaid and to one side-thereof therebypermitting the air to enter and circulate through said cored openings 22. When the draft is off the balls 21 reseat in the sockets aforesaid. This method of admitting air to the cored holes 22 and the benefits and advantages thereof are described and claimed at length vin the Letters Patent #1,261,268 hereinbefore referred to. l

The amount of air to be admitted to the grate will determine the area of the openings inthe disks to be placed in operative position. The greater the pressure the less the area of the said openings. `When the pressure, however, is/excessive or there is an opening in the fuel, the air is apt to force itself through this opening or concentrate and force itself through a part of the grate alone instead ofthrough the entire surface thereof, creating an improper combustion of fuel and an uneven lire whereby it becomes necessary to increase the area for the passage of the air, beyond the capacity of any openings in the disks 23 and 24. To meet thissituation I have rprovided the slidable disks 25 or 29 which are inserted in the grooves 27 and have communication with the air supply and with the f disks 23 or 24 by means of the openings 28. In this way an even distribution Vof air may be had over the entire area of the grate. Also when working under a low pressure an increased volume of air may be required without increasing 'the pressure. This is obtained by thevk use of the slidable disks 25 or 29 as just described whereby a greater area is obtained for thepassage of the air thereby securing a greater volume of air without increasing the pressure.

The foregoing detailed description of my invention will enable those skilled in the art to which it pertains to readily understand the hereinafter claims. I do not wish to reopenings to regulate the volume of air to be admitted Vto said grate, grooves provided in the body of said grate, disks, having openings therein, adapted to be positioned in said grooves and air communications between the various disks whereby the volume of air to be admitted to said grate may be increased. Y

2. The combination in a Water graterhaving a continuous circulation of water therethrough and having cored openings therein of an air chamber, means for admitting air from said chamber to said openings, disks, tapering in form and having openings therein, adapted to be positioned in the said grate openings to regulate the Volume of air to be admitted to said grate, grooves provided in the body of said grate, disks, tapering in form and having openings therein adapted to be slid in said grooves in sections and air communications between theY various disks whereb the volume ofair to be admitted to said, grate may be increased.

In testimony whereof I aix my si ature.

' HARRY F. MO RIS. 

